//
//  CYMainTabBar.swift
//  CYSinaWB
//
//  Created by mac on 16/2/14.
//  Copyright © 2016年 mac. All rights reserved.
//

import UIKit

class CYMainTabBar: UITabBar {

    override func layoutSubviews() {
        super.layoutSubviews()
        
        let w = self.bounds.width/5
        let h = self.bounds.height
        let rect = CGRect(x: 0, y: 0, width: w, height: h)
        
        //递增索引
        var index :CGFloat = 0
        
        //遍历
        for subView in subviews {
            if subView.isKindOfClass(NSClassFromString("UITabBarButton")!){
            subView.frame = CGRectOffset(rect, w * index, 0)
                index += (index == 1 ? 2 : 1)
            }
        }
        plusBtn.frame = CGRectOffset(rect, w * 2, 0)
    }
    lazy var plusBtn: UIButton = {
        let btn = UIButton()
        //设置背景图片
        btn.setBackgroundImage(UIImage(named: "tabbar_compose_button"), forState: .Normal)
        btn.setBackgroundImage(UIImage(named: "tabbar_compose_button_highlighted"), forState: .Highlighted)
        
        //设置图片
        btn.setImage(UIImage(named: "tabbar_compose_icon_add"), forState: .Normal)
        btn.setImage(UIImage(named: "tabbar_compose_icon_add_highlighted"), forState: .Highlighted)
        self.addSubview(btn)
        
        return btn
        }()
    
    

}
